We need to run an office 365 hybrid deployment. AD, SharePoint and all other servises must remain on site and only mails must be moved to the 365 exchange.
The mails are currently hosted in a CPanel with an IMAP server.
There are a few large mail boxes and one that is over 30GB, so we might need to look at arciving of data in exchange.
I need to know how long and what you would need to set up...